How to combine .srt file with .mkv file?

I've looked through these forums and the only threads I've found addressing this are all 2 years old so I don't know if there's anything new out there. So, can anyone tell me what software I will need to add an .srt file into an .mkv file? I've downloaded AVI-muxGUI and Virtual Dub, but can't get either to work.

 

Use MKVMerge:

http://www.videohelp.com/tools/MKVtoolnix

http://www.afterdawn.com/guides/archive/creating_mkv_files_with_mkvtoolnix_page_3.cfm

 

Oops - beat me to it!

 

Thanks! I got it working but is there any way to sync the .srt and .mkv files? The subtitles are a couple of seconds off from the video.

 

Try Subtitle Workshop, works pretty good.

 

Thanks again. Worked like a charm.

 

You're welcome, cheers!